US 12,459,870 B2
Thermally conductive boron nitride films and multilayered composites containing them
Randall Erb, Newton, MA (US); Jessica Faust, Tyngsboro, MA (US); and Evan Toth, North Kingstown, RI (US)
Assigned to Northeastern University, Boston, MA (US)
Appl. No. 17/631,670
Filed by Northeastern University, Boston, MA (US)
PCT Filed Jul. 31, 2020, PCT No. PCT/US2020/044667
§ 371(c)(1), (2) Date Jan. 31, 2022,
PCT Pub. No. WO2021/034490, PCT Pub. Date Feb. 25, 2021.
Claims priority of provisional application 62/880,699, filed on Jul. 31, 2019.
Claims priority of provisional application 62/936,877, filed on Nov. 18, 2019.
Prior Publication US 2022/0274887 A1, Sep. 1, 2022
Int. Cl. C04B 35/583 (2006.01); B32B 5/02 (2006.01); B32B 5/26 (2006.01); B32B 7/12 (2006.01); B32B 15/14 (2006.01); B32B 15/18 (2006.01); C04B 35/622 (2006.01); C09K 5/14 (2006.01); B32B 5/12 (2006.01); B32B 7/027 (2019.01)
CPC C04B 35/583 (2013.01) [B32B 5/024 (2013.01); B32B 5/262 (2021.05); B32B 7/12 (2013.01); B32B 15/14 (2013.01); B32B 15/18 (2013.01); C04B 35/62218 (2013.01); C09K 5/14 (2013.01); B32B 5/12 (2013.01); B32B 7/027 (2019.01); B32B 2255/06 (2013.01); B32B 2255/26 (2013.01); B32B 2260/021 (2013.01); B32B 2260/046 (2013.01); B32B 2262/101 (2013.01); B32B 2307/30 (2013.01); B32B 2307/73 (2013.01); C04B 2235/5292 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A layered composite material comprising:
i) a hexagonal boron nitride thermally conducting layer disposed at a first surface of the composite material;
ii) an optional core layer;
ii) a fiber reinforced layer; and
iv) a superhydrophobic surface layer disposed at a second surface of the composite material, opposite the first surface;
wherein the superhydrophobic layer is formed from a fiber fabric comprising a woven fiber layer and a layer of z-aligned milled fibers extending across the woven fiber layer,
the layer of z-aligned milled fibers comprising a densely-packed, continuous array of z-aligned, milled carbon fibers that are situated substantially parallel to each other and substantially perpendicular to the woven fiber layer;
wherein the fiber fabric is impregnated with an adhesive such that the z-aligned milled fibers are partially embedded in the adhesive;
and wherein the z-aligned milled fibers are coated with polytetrafluoroethylene and exposed at the second surface.